A hydraulic fixing and anti-loosening mechanism for a chain saw blade guide

Abstract

The present invention discloses a hydraulic fixing and anti-loosening mechanism for a chain saw blade guide, comprising a hydraulic motor, a saw plate deflection bearing seat, a connecting rod seat, a saw plate tensioning block and a chain saw blade guide, wherein the saw plate deflection bearing seat is sleeved on the output shaft of the hydraulic motor, the connecting rod seat is sleeved on the saw plate deflection bearing seat on the side away from the hydraulic motor, the saw plate tensioning block is fixedly installed on the outer side of the connecting rod seat, the fixed end of the chain saw blade guide is tightly pressed and fixed on the connecting rod seat by the saw plate tensioning block, an oil inlet pipe joint is arranged on the top outer wall of the connecting rod seat, and an upper oil cavity and a lower oil cavity are arranged at the front end of the connecting rod seat extending outward in a U shape. The fixing and anti-loosening device of the present invention can adjust the fastening and anti-loosening of the chain saw blade guide, thereby improving the reliability of the felling machine and greatly reducing the operation and maintenance time.

Description

Technical Field

[0001] The invention belongs to the technical field of logging equipment, and in particular relates to a hydraulic fixing and anti-loosening mechanism for a chain saw blade guide plate. Background Art

[0002] In the existing felling machines, in order to prevent the chain guide from loosening and tightening, the saw chain guide of the felling machine is usually tightened and prevented from loosening by bolts. This tightening method will cause the bolts to loosen during long-term use of the felling machine. In this way, the tensioning and fixing method for the chain guide is large in size, heavy, and the tensioning force is easy to change. In addition, this tightening method will cause the bolts to loosen and the threads to rust and get stuck during long-term use of the felling machine. Once the tightening and loosening bolts are loose, the high-speed saw chain will be separated from the guide, which will cause great hidden dangers to personnel and tools. In some cases, when there are no special tools, there are disadvantages such as inconvenience in maintenance. When replacing, a special wrench is also needed, which brings a large amount of maintenance to the later disassembly and maintenance. In order to make the felling machine head more portable and lightweight, the space of the felling machine head is relatively small, and there is insufficient operating space for using tools to twist the tightening bolts. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulic fixing and anti-loosening mechanism for a chain saw blade guide plate. The fixing and anti-loosening device of the present invention can adjust the fastening and anti-loosening of the chain saw blade guide plate, thereby improving the reliability of the felling machine and greatly reducing the operation and maintenance time. In order to achieve the above purpose, the following technical effects are adopted:

[0004] According to one aspect of the present invention, a hydraulic fixing and anti-loosening mechanism for a chain saw blade guide is provided, comprising a hydraulic motor, a saw plate deflection bearing seat, a connecting rod seat, a saw plate tensioning block and a chain saw blade guide, the saw plate deflection bearing seat is sleeved on the output shaft of the hydraulic motor, the connecting rod seat is sleeved on the saw plate deflection bearing seat away from the side of the hydraulic motor, the output shaft of the hydraulic motor extends from one side of the saw plate deflection bearing seat to the other side and then sleeved on the connecting rod seat, the saw plate tensioning block is fixedly installed on the outer side of the connecting rod seat, and the chain saw blade guide is fixedly extended outward along the end of the saw plate tensioning block, and the chain saw blade guide The fixed end is pressed and fixed to the connecting rod seat by a saw plate tensioning block, and an oil inlet pipe joint is arranged on the top outer wall of the connecting rod seat, and an upper oil cavity and a lower oil cavity are arranged on the front end of the connecting rod seat in a U-shape extending outward, and the oil inlet pipe joint is communicated with the upper oil cavity and the lower oil cavity respectively, and the saw plate tensioning block is slidably engaged in the opening between the upper oil cavity and the lower oil cavity with a gap, and an upper piston rod that is transmission-connected to the inner side wall of the upper part of the saw plate tensioning block extends outward from the upper oil cavity, and a lower piston rod that is transmission-connected to the inner side wall of the lower part of the saw plate tensioning block extends outward from the lower oil cavity.

[0005] The above solution is further preferred in that an oil unloading pipe joint is provided on the lower outer side wall of the connecting rod seat.

[0006] The above scheme is further preferred in that symmetrical and parallel sliding grooves are respectively provided on the lower edge of the inner wall of the upper oil cavity and the upper edge of the inner wall of the lower oil cavity, and the inner side of the saw plate tensioning block is slidably connected in the sliding groove through a clamping strip.

[0007] The above scheme is further preferred that the connecting rod seat is mounted on the output shaft of the hydraulic motor through a cylindrical rolling bearing, and a first O-ring is arranged between the saw plate deflection bearing seat and the connecting rod seat.

[0008] The above scheme is further preferred in that the hydraulic motor is fixedly connected to the saw plate deflection bearing seat by a first hexagon socket screw, and a first spring washer is sleeved on the first hexagon socket screw.

[0009] The above scheme is further preferred, in which a chainsaw blade is installed around the outer wall of the chainsaw blade guide, a sprocket is installed inside the outer center of the connecting rod seat, the chainsaw blade guide is transmission connected to the sprocket through the chainsaw blade, the sprocket is transmission connected to the output shaft of the hydraulic motor, the mounting shaft at the center of one side of the sprocket is embedded in the outer center of the connecting rod seat through a limiting flange, and a second O-ring is arranged between the limiting flange and the outer center of the connecting rod seat.

[0010] The above solution is further preferred in that the limiting flange is fixedly installed on the outer side of the connecting rod seat by a second hexagon socket screw, and a second spring washer is sleeved on the second hexagon socket screw.

[0011] The above scheme is further preferred in that a sprocket clamping block and a fastening hexagon socket bolt are arranged at the outer center of the sprocket, and the fastening hexagon socket bolt passes through the sprocket clamping block, the sprocket mounting shaft, the limit flange, the connecting rod seat and is fixedly connected to the output shaft of the hydraulic motor in sequence.

[0012] The above scheme is further preferred that an O-shaped spring piece and an O-shaped flat washer are sleeved on the fastening hexagon socket bolt and located on the outer side of the sprocket clamping block.

[0013] In summary, the present invention adopts the above technical solution, and the present invention has the following technical effects:

[0014] (1) The present invention introduces hydraulic oil into the upper oil cavity and the lower oil cavity for tightening and preventing loosening respectively through the main oil cavity in the connecting rod seat. The hydraulic oil pushes the piston in the cavity and the piston rod pushes the saw plate tensioning block. When the oil pressure in the cavity reaches a preset pressure value, the chain saw blade guide plate is tightened and prevented from loosening.

[0015] (2) The present invention adjusts the fastening and anti-loosening method of the chain saw blade guide plate commonly used in felling machines from bolt fastening to hydraulic fastening and anti-loosening. After adopting the hydraulic fastening and anti-loosening method, the high integration and high reliability of the hydraulic system can greatly reduce the time of operation and maintenance, and also provide operability for the reduction of the overall volume and lightness of the felling machine, avoiding the risk of failure caused by the bolt fastening and anti-loosening method under normal conditions to operators and tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall installation structure of a hydraulic fixing and anti-loosening mechanism of a chain saw blade guide plate of the present invention;

[0017] Figure 2 It is a schematic diagram of the main structure of a hydraulic fixing and anti-loosening mechanism of a chain saw blade guide plate of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the connecting rod seat of the present invention;

[0019] Figure 4 It is a schematic diagram of the AA structure of the connecting rod seat of the present invention;

[0020] Figure 5 It is a schematic diagram of the internal structure of the connecting rod seat of the present invention;

[0021] In the accompanying drawings, there are a hydraulic motor 1, a saw plate deflection bearing seat 2, a connecting rod seat 3, a saw plate tensioning block 4, a chain saw blade guide plate 5, an oil inlet pipe joint 6, an oil unloading pipe joint 7, a pressure oil source 8, a high-pressure oil pipe 9, a first hexagon socket screw 10, a first spring washer 11, a first O-ring 21, an upper oil chamber 30, an upper piston body 30a, a lower oil chamber 31, a lower piston body 31a, a limiting flange 32, a second O-ring 33, a second hexagon socket screw 34, a second spring washer 35, a sprocket clamping block 36, a tightening hexagon socket bolt 37, a spring piece 38, a flat washer 39, a sprocket 40, a mounting shaft 41, a chain saw blade 50, a sliding slot 301, an upper piston rod 300, and a lower piston rod 310. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0023] Combination Figure 1 and Figure 2As shown, a hydraulic fixing and anti-loosening mechanism of a chain saw blade guide according to the present invention comprises a hydraulic motor 1, a saw plate deflection bearing seat 2, a connecting rod seat 3, a saw plate tensioning block 4 and a chain saw blade guide 5, the saw plate deflection bearing seat 2 is sleeved on the output shaft of the hydraulic motor 1, the connecting rod seat 3 is sleeved on the saw plate deflection bearing seat 2 on the side away from the hydraulic motor 1, the output shaft of the hydraulic motor 1 extends from one side of the saw plate deflection bearing seat 2 to the other side and then sleeved on the connecting rod seat 3, the saw plate tensioning block 4 is fixedly installed on the outer side of the connecting rod seat 3, the chain saw blade guide 5 is fixedly extended outward along the end of the saw plate tensioning block 4, a chain saw blade 50 is installed around the outer wall of the chain saw blade guide 5, the fixed end of the chain saw blade guide 5 is pressed and fixed on the connecting rod seat 3 by the saw plate tensioning block 4, and an oil inlet is provided on the top outer wall of the connecting rod seat 3 A pipe joint 6 is provided on the lower outer side wall of the connecting rod seat 3 with an oil unloading pipe joint 7. The oil inlet pipe joint 6 is connected to a pressure oil source 8 through a high-pressure oil pipe 9. During logging operations, the hydraulic motor 1 is started to rotate, and the output shaft of the hydraulic motor 1 drives the chain saw blade 50 to circulate and rotate on the chain saw blade guide plate 5 to perform sawing operations. At the same time, the pressure oil source 8 is operated externally to transport the pressure oil to the connecting rod seat 1 through the high-pressure oil pipe 9. The pressure oil enters the connecting rod seat 3 for tightening and preventing loosening after being distributed through the main oil chamber in the connecting rod seat 1. When the oil pressure in the cavity of the connecting rod seat 3 reaches a preset value, the saw plate tensioning block 4 is pushed to drive the chain saw blade guide plate 5 to achieve the tightening and preventing loosening effects. When the logging operation is completed, the pressure oil source 8 is first turned off through the valve group to cut off the pressure oil, and the pressure is relieved through the oil unloading pipe joint 7 to return the pressure oil in the pressure oil source 8 to the pressure oil source 8.

[0024] In the present invention, combined with Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, an upper oil cavity 30 and a lower oil cavity 31 are provided at the front end of the connecting rod seat 3 in a U-shape extending outward, the oil inlet pipe joint 6 is communicated with the upper oil cavity 30 and the lower oil cavity 31 respectively, the saw plate tensioning block 4 is slidably engaged in the opening between the upper oil cavity 30 and the lower oil cavity 31 in a gap, an upper piston rod 300 connected to the inner side wall of the upper part of the saw plate tensioning block 4 is extended outward from the upper oil cavity 30, and a lower piston rod 310 connected to the inner side wall of the lower part of the saw plate tensioning block 4 is extended outward from the lower oil cavity 31, an upper piston body 30a is provided in the upper oil cavity 30, and one end of the upper piston rod 300 is fixed to the upper piston body 30 a, the other end of the upper piston rod 300 extends outward from the upper oil chamber 30 and is transmission connected to the saw plate tensioning block 4, and a lower piston body 31a is arranged in the lower oil chamber 31, one end of the lower piston rod 310 is fixed on the lower piston body 31a, and the other end of the lower piston rod 310 extends outward from the lower oil chamber 31 and is transmission connected to the saw plate tensioning block 4, and the lower edge of the inner wall of the upper oil chamber 30 and the upper edge of the inner wall of the lower oil chamber 31 are respectively provided with sliding grooves 301 which are symmetrical and parallel to each other, and the inner side of the saw plate tensioning block 4 is slidably clamped in the sliding groove 301 through a clamping strip, and the saw plate tensioning block 4 slides within the travel range of the sliding groove 301 to achieve tightening and anti-loosening. During logging operations, the pressure oil source 8 is operated externally to connect the pressure oil to the oil inlet pipe joint 6 through the high-pressure oil pipe 9 and deliver the pressure oil to the connecting rod seat 3. The pressure oil enters the upper oil cavity 30 and the lower oil cavity 31 after being distributed through the main oil chamber in the connecting rod seat 3. The pressure oil in the upper oil cavity 30 and the lower oil cavity 31 push the pistons set in the upper oil cavity 30 and the lower oil cavity 31 respectively, so that the pistons slide in the tightening and anti-loosening direction through the piston rod and the saw plate tensioning block 4. When the oil pressure in the cavity reaches a preset value, it plays a role in tightening and anti-loosening. For safety and reliability, a locking device is set to prevent misoperation. When the logging operation is finished, the pressure oil source 8 is first turned off through the valve group to cut off the pressure oil, and the pressure is relieved through the oil unloading pipe joint 7, and the pressure oil in the upper oil cavity 30 and the lower oil cavity 31 is returned to the pressure oil source 8. If necessary, adjust the drain bolt (not shown) at the end of the oil unloading pipe joint 7 to drain the residual oil, and finally achieve the purpose of releasing the contact tightening and anti-loosening of the chain saw guide plate. The pressure oil source is supplied by the valve group. A pressure sensor can be set inside the connecting rod seat or at the outlet of the valve group pressure oil source. The pressure sensor can adjust and monitor the tightening and anti-loosening oil pressure. A locking device is set in the upper and lower oil chambers to prevent the fixing and anti-loosening devices from malfunctioning due to hydraulic fluctuations.

[0025] In the present invention, combined with Figure 1 and Figure 5As shown, the connecting rod seat 3 is arranged on the output shaft of the hydraulic motor 1 through a cylindrical rolling bearing sleeve 20, and a first O-ring 21 is arranged between the saw plate deflection bearing seat 2 and the connecting rod seat 3, and the hydraulic motor 1 and the saw plate deflection bearing seat 2 are fixedly connected by a first hexagon socket screw 10, and a first spring washer 11 is sleeved on the first hexagon socket screw 10, so that the connection stability between the saw plate deflection bearing seat 2 and the hydraulic motor 1 can be better, and the first spring washer 11 provides a certain buffer space between them, so as to avoid the mutual wear between the saw plate deflection bearing seat 2 and the hydraulic motor 1 and cause looseness. A sprocket 40 is installed inside the outer center of the connecting rod seat 3, the chain saw blade guide 5 is connected to the sprocket 40 through the chain saw blade 50, and the sprocket 40 is connected to the output shaft of the hydraulic motor 1. The limiting flange 32 is fixedly installed on the outer side of the connecting rod seat 3 by a second hexagon socket screw 34, and a second spring washer 35 is sleeved on the second hexagon socket screw 34. The installation shaft 31 at the center of one side of the sprocket 30 is embedded and installed in the outer center of the connecting rod seat 3 through the limiting flange 32. A second O-ring 33 is arranged between the outer center of the connecting rod seat 3, and the mounting shaft 31 of the sprocket 30 is fixed in the connecting rod seat 3 by the limiting flange 32. The second O-ring 33 prevents friction between the limiting flange 32 and the connecting rod seat 3, thereby preventing the limiting flange 32 from being worn, so that the connection stability of the limiting flange 32 is better. A sprocket clamping block 36 and a fastening hexagon socket bolt 37 are arranged at the outer center of the sprocket 30. The fastening hexagon socket bolt 37 passes through the sprocket clamping block 36 and the mounting of the sprocket 40 in sequence. The shaft 31, the limit flange 32, the connecting rod seat 3 and the output shaft of the hydraulic motor 1 are fixedly connected; a spring piece 38 and a flat washer 39 are sleeved on the outer side of the sprocket clamping block 36 on the tightening hexagon socket bolt 37, and the spring piece 38 and the flat washer 39 can make the connection between the sprocket clamping block 36 and the sprocket 40 and the output shaft of the hydraulic motor 1 more stable. The sprocket clamping block 36 further fixes the sprocket 40 by tightening the hexagon socket bolt 37, so that it is stably connected to the connecting rod seat 3 and the output shaft of the hydraulic motor 1, and the hydraulic motor 1 rotates When the sprocket 40 is in motion, it drives the chain saw blade 50 to rotate. At this time, the sprocket 40 drives the chain saw blade 50 to rotate along the chain saw blade guide plate 5 to perform wood sawing operations. The pressure oil source 8 transmits the pressure oil to the upper oil cavity 30 and the lower oil cavity 31 in the connecting rod seat 3 through the high-pressure oil pipe 9, so that the piston body in the upper oil cavity 30 and the lower oil cavity 31 pushes the saw plate tensioning block 4 to slide in the gap through the piston rod, thereby adjusting the tightness between the sprocket 40 and the chain saw blade 50, and driving the chain saw blade guide plate 5 and the chain saw blade 50 to achieve the effect of tightening and preventing loosening.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hydraulic fixing and anti-loosening mechanism for a chain saw blade guide, characterized in that: The invention comprises a hydraulic motor (1), a saw plate deflection bearing seat (2), a connecting rod seat (3), a saw plate tensioning block (4) and a chain saw blade guide plate (5), wherein the saw plate deflection bearing seat (2) is sleeved on the output shaft of the hydraulic motor (1), and the connecting rod seat (3) is sleeved on the saw plate deflection bearing seat (2) on the side away from the hydraulic motor (1); the output shaft of the hydraulic motor (1) extends from one side of the saw plate deflection bearing seat (2) to the other side and then sleeved on the connecting rod seat (3); 3), the saw plate tensioning block (4) is fixedly installed on the outer side of the saw plate tensioning block (4), the chain saw blade guide plate (5) is fixedly extended outwardly along the end of the saw plate tensioning block (4), the fixed end of the chain saw blade guide plate (5) is pressed and fixed on the connecting rod seat (3) through the saw plate tensioning block (4), an oil inlet pipe joint (6) is arranged on the top outer wall of the connecting rod seat (3), an oil unloading pipe joint (7) is arranged on the lower outer wall of the connecting rod seat (3), and a pressure sensor is arranged inside the connecting rod seat (3); An upper oil cavity (30) and a lower oil cavity (31) are provided at the front end of the connecting rod seat (3) in a U-shape and extending outward, the oil inlet pipe joint (6) is respectively connected to the upper oil cavity (30) and the lower oil cavity (31), the saw plate tensioning block (4) is slidably engaged in the opening between the upper oil cavity (30) and the lower oil cavity (31) in a gap, an upper piston rod (300) is extended outward from the upper oil cavity (30) and is transmission-connected to the inner side wall of the upper part of the saw plate tensioning block (4), and a lower piston rod (310) is extended outward from the lower oil cavity (31) and is transmission-connected to the inner side wall of the lower part of the saw plate tensioning block (4); Mutually symmetrical and parallel sliding slots (301) are respectively provided on the lower edge of the inner wall of the upper oil cavity (30) and the upper edge of the inner wall of the lower oil cavity (31); the inner side of the saw plate tensioning block (4) is slidably clamped in the sliding slots through a clamping strip, and the saw plate tensioning block (4) slides within the travel range of the sliding slots (301) to achieve tightening and anti-loosening; One end of the upper piston rod (300) is fixed on the upper piston body (30a), and the other end of the upper piston rod (300) extends outward from the upper oil cavity (30) and is transmission-connected to the saw plate tensioning block (4); a lower piston body (31a) is arranged in the lower oil cavity (31), and one end of the lower piston rod (310) is fixed on the lower piston body (31a), and the other end of the lower piston rod (310) extends outward from the lower oil cavity (31) and is transmission-connected to the saw plate tensioning block (4); The external operating pressure oil source (8) connects the pressure oil to the oil inlet pipe joint (6) through the high-pressure oil pipe (9) and delivers the pressure oil to the connecting rod seat (3). The pressure oil enters the upper oil cavity (30) and the lower oil cavity (31) after being distributed through the main oil cavity in the connecting rod seat (3). The pressure oil in the upper oil cavity (30) and the lower oil cavity (31) respectively push the pistons arranged in the upper oil cavity (30) and the lower oil cavity (31), so that the pistons slide in the tightening and anti-loosening direction through the piston rod and the saw plate tensioning block (4). When the oil pressure in the cavity reaches a preset value, tightening and anti-loosening are achieved.

2. The hydraulic fixing and anti-loosening mechanism of a chain saw blade guide according to claim 1, characterized in that: The connecting rod seat (3) is arranged on the output shaft of the hydraulic motor (1) through a cylindrical rolling bearing sleeve (20), and a first O-shaped gasket (21) is arranged between the saw plate deflection bearing seat (2) and the connecting rod seat (3).

3. The hydraulic fixing and anti-loosening mechanism of a chain saw blade guide according to claim 2, characterized in that: The hydraulic motor (1) is fixedly connected to the saw plate deflection bearing seat (2) via a first hexagon socket screw (10), and a first spring washer (11) is sleeved on the first hexagon socket screw (10).

4. The hydraulic fixing and anti-loosening mechanism of a chain saw blade guide according to claim 1, characterized in that: A chain saw blade (50) is installed around the outer wall of the chain saw blade guide (5), and a sprocket (40) is installed inside the outer center of the connecting rod seat (3). The chain saw blade guide (5) is connected to the sprocket (40) through the chain saw blade (50), and the sprocket (40) is connected to the output shaft of the hydraulic motor (1). The installation shaft (41) at the center of one side of the sprocket (40) is embedded in the outer center of the connecting rod seat (3) through a limiting flange (32), and a second O-ring (33) is provided between the limiting flange (32) and the outer center of the connecting rod seat (3).

5. The hydraulic fixing and anti-loosening mechanism of a chain saw blade guide plate according to claim 4, characterized in that: The limiting flange (32) is fixedly mounted on the outer side of the connecting rod seat (3) by means of a second hexagon socket screw (34), and a second spring washer (35) is sleeved on the second hexagon socket screw (34).

6. The hydraulic fixing and anti-loosening mechanism for a chain saw blade guide plate according to claim 4, characterized in that: A sprocket clamping block (36) and a tightening hexagon socket bolt (37) are arranged at the outer center of the sprocket (40). The tightening hexagon socket bolt (37) sequentially penetrates the sprocket clamping block (36), the mounting shaft (41) of the sprocket (40), the limiting flange (32), the connecting rod seat (3), and is fixedly connected to the output shaft of the hydraulic motor (1).

7. The hydraulic fixing and anti-loosening mechanism of the chain saw blade guide plate according to claim 6, characterized in that: An O-shaped spring sheet (38) and an O-shaped flat washer (39) are sleeved on the fastening hexagon socket bolt (37) and located on the outer side of the sprocket wheel pressing block (36).

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